diff --git a/Gemfile.lock b/Gemfile.lock
index eb0892c..a3a5bdf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    chartkick (3.3.1)
+    chartkick (3.4.0)
     concurrent-ruby (1.1.6)
     ffi (1.12.2)
     httparty (0.18.0)